New YorK AGRICULTURAL EXPERIMENT STATION. 25 
ot 
The market price of potatoes at digging time being 75 cents per 
bushel the increase had a value of $6.67 per acre. After deducting 
the expense of spraying, $3.63 per acre, there remains a net profit 
of $3.04 per acre. 
THE GENESEO EXPERIMENT. 
This experiment, conducted by S. Fraser, Geneseo, N. Y., was in 
a young orchard in which 6-row strips of potatoes were planted be- 
tween the rows of trees, the area devoted to potatoes being 17% 
acres. The sprayer used was a two-horse, five-row Brown sprayer 
with two nozzles per row. The potatoes being in 6-row strips and 
the sprayer a 5-row machine it happened that the middle four rows 
of each strip were double-sprayed at each spraying. The whole 
field was sprayed six times and four acres of it a seventh time, the 
dates being: July 15-16, 23-25, August 7-9, 17-19-20-21, September 
3-5, 16-18, 25-27. In the first spraying 6-4-50 bordeaux was used ; 
in the others, 4-4-50. The water required was pumped by hand, 
most of it being obtained in the field. Arsenate of lead, for bugs, was 
used with the bordeaux in two sprayings. One 6-row strip was left 
for a check. The rows were 576 feet long by 39 inches wide. 
They were kept free of bugs by two applications of arsenate of lead. 
At no time was there much contrast between sprayed and un- 
sprayed rows. ‘There was no blight and but few flea beetles. 
The expense account contained the following items: 

DME EMCODDCL | Sit Dlate 1G) °F7OC.. secs cas v5.04 de VG es Biles Geel 2 $63 37 
TPL TUL CRMC eet etted cette orton oF sands. Sod Pst wa: +) bys nase byerco epcealna alee 5 70 
Bm peenate Of lead (@) OC... cs. face cs aaie viva cv slews cece Q 45 
SUC AAC TOT GINATte 2 T5Coc ts ce dive \ ce Pele ot seeds sre eG a sd cledes 30 75 
Meme Lic retenininG) 200 2 ee STS Pe ae no 8s 4I 00 
MEME SL VEC ayes. Sick Reis. dane. a8 So vase Seg ss Oh elas ees 24 00 
OR oe EMP ROS Wt NS Lapin OG oe Pie sw Bice gown v0 £2 SIA .27 
The test rows (which were of the variety Sir Walter Raleigh) 
received 7 double sprayings. The yields were as follows: 
Average of 4 sprayed rows, 282 lbs.=109.3 bu. per acre. 
Average of 2 check rows, 278 lbs.==107.8 bu. per acre. 
Gain due to spraying, 1.5 bu. per acre. 
At 50 cents per bushel, the market price of potatoes at digging 
time, the increase has a value of 75 cents. The expense of seven 
double sprayings being $13.37 per acre, there was a loss of $12.62 
per acre. 
